Of uncertain derivation; a vine blossom; used also adverbially, abloom -- tender grape.
Englishman's Concordance
1) grape blossom, grape bud Part of Speech: noun masculine A Related Word by BDB/Strong’s Number: of uncertain derivation Same Word by TWOT Number: 1513
Brown-Driver-Briggs
[סְמָדֵר ?], also סְמָדַ֔ר֖, סְמָדַ֑ר
noun masculineSong 7:13blossom of grape (just at flowering DuvalREJ xiv (1887), 227 ff. Late Hebrew id.; Aramaic סמדר, , Mandean סימאדרא NöM. 128); — always absolute ׳ס, only Canticles: הַגְּפָנִיםסְמָדַר֖Songs 2:13the vines are (all) blossom; כְּרָמִיםסְמָדַ֑רSongs 2:15 (on bold predicate compare Ges§ 141d); מִּתַּךְִהַסְּמָדַ֔ר Song 7:13 the blossom has opened (its buds).
Songs 2:13 HEB:פַגֶּ֔יהָ וְהַגְּפָנִ֥ים ׀ סְמָדַ֖ר נָ֣תְנוּ רֵ֑יחַ NAS: And the vines in blossom have given KJV: and the vines [with] the tender grape give INT: figs and the vines blossom have given forth fragrance
Songs 2:15 HEB:כְּרָמִ֑ים וּכְרָמֵ֖ינוּ סְמָדַֽר׃ NAS: While our vineyards are in blossom. KJV: for our vines [have] tender grapes. INT: the vineyards our vineyards blossom
Songs 7:12 HEB:הַגֶּ֙פֶן֙ פִּתַּ֣ח הַסְּמָדַ֔ר הֵנֵ֖צוּ הָרִמּוֹנִ֑ים NAS: has budded [And its] blossoms have opened, KJV: flourish, [whether] the tender grape appear, INT: the vine have opened blossoms forth the pomegranates